164451478 has 16 divisors (see below), whose sum is σ = 250690464. Its totient is φ = 80893120.

The previous prime is 164451457. The next prime is 164451481. The reversal of 164451478 is 874154461.

164451478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 164451478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86676 + ... + 88552.

It is an arithmetic number, because the mean of its divisors is an integer number (15668154).

Almost surely, 2^164451478 is an apocalyptic number.

164451478 is a deficient number, since it is larger than the sum of its proper divisors (86238986).

164451478 is a wasteful number, since it uses less digits than its factorization.

164451478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567.

The product of its digits is 107520, while the sum is 40.

The square root of 164451478 is about 12823.8636143715. The cubic root of 164451478 is about 547.8721952298.

The spelling of 164451478 in words is "one hundred sixty-four million, four hundred fifty-one thousand, four hundred seventy-eight".